diff --git a/client/package.json b/client/package.json
index de12b9f71852..a5ccfd526d6f 100644
--- a/client/package.json
+++ b/client/package.json
@@ -200,6 +200,7 @@
     "sass-loader": "^13.3.2",
     "store": "^2.0.12",
     "style-loader": "^3.3.3",
+    "timezone-mock": "^1.3.6",
     "ts-jest": "^29.2.3",
     "ts-loader": "^9.5.0",
     "tsconfig-paths-webpack-plugin": "^4.1.0",
diff --git a/client/src/components/Markdown/Elements/InvocationTime.vue b/client/src/components/Markdown/Elements/InvocationTime.vue
index b335bb377974..1dfb74342b12 100644
--- a/client/src/components/Markdown/Elements/InvocationTime.vue
+++ b/client/src/components/Markdown/Elements/InvocationTime.vue
@@ -5,6 +5,8 @@
 </template>
 
 <script>
+import { formatGalaxyPrettyDateString } from "@/utils/dates";
+
 export default {
     props: {
         args: {
@@ -19,7 +21,7 @@ export default {
     computed: {
         content() {
             const invocation = this.invocations[this.args.invocation_id];
-            return invocation && new Date(invocation["create_time"]).toUTCString();
+            return invocation && formatGalaxyPrettyDateString(invocation["create_time"]);
         },
     },
 };
diff --git a/client/src/components/Markdown/Markdown.vue b/client/src/components/Markdown/Markdown.vue
index 4d15b58b7e42..6b2d5c798801 100644
--- a/client/src/components/Markdown/Markdown.vue
+++ b/client/src/components/Markdown/Markdown.vue
@@ -73,6 +73,7 @@ import { mapActions } from "pinia";
 import Vue from "vue";
 
 import { useWorkflowStore } from "@/stores/workflowStore";
+import { formatGalaxyPrettyDateString } from "@/utils/dates";
 
 import { splitMarkdown as splitMarkdownUnrendered } from "./parse";
 
@@ -138,23 +139,9 @@ export default {
             return this.enable_beta_markdown_export ? this.exportLink : null;
         },
         time() {
-            let generateTime = this.markdownConfig.generate_time;
+            const generateTime = this.markdownConfig.generate_time;
             if (generateTime) {
-                if (!generateTime.endsWith("Z")) {
-                    // We don't have tzinfo, but this will always be UTC coming
-                    // from Galaxy so append Z to assert that prior to parsing
-                    generateTime += "Z";
-                }
-                const date = new Date(generateTime);
-                return date.toLocaleString("default", {
-                    day: "numeric",
-                    month: "long",
-                    year: "numeric",
-                    minute: "numeric",
-                    hour: "numeric",
-                    timeZone: "UTC",
-                    timeZoneName: "short",
-                });
+                return formatGalaxyPrettyDateString(generateTime);
             }
             return "unavailable";
         },
diff --git a/client/src/components/UtcDate.vue b/client/src/components/UtcDate.vue
index 9bd9f547c777..3ddef27b7c6d 100644
--- a/client/src/components/UtcDate.vue
+++ b/client/src/components/UtcDate.vue
@@ -1,7 +1,9 @@
 <script setup lang="ts">
-import { format, formatDistanceToNow, parseISO } from "date-fns";
+import { formatDistanceToNow } from "date-fns";
 import { computed } from "vue";
 
+import { galaxyTimeToDate, localizeUTCPretty } from "@/utils/dates";
+
 interface UtcDateProps {
     date: string;
     mode?: "date" | "elapsed" | "pretty";
@@ -11,10 +13,10 @@ const props = withDefaults(defineProps<UtcDateProps>(), {
     mode: "date",
 });
 
-const parsedDate = computed(() => parseISO(`${props.date}Z`));
+const parsedDate = computed(() => galaxyTimeToDate(props.date));
 const elapsedTime = computed(() => formatDistanceToNow(parsedDate.value, { addSuffix: true }));
 const fullISO = computed(() => parsedDate.value.toISOString());
-const pretty = computed(() => format(parsedDate.value, "eeee MMM do H:mm:ss yyyy zz"));
+const pretty = computed(() => localizeUTCPretty(parsedDate.value));
 </script>
 
 <template>
diff --git a/client/src/utils/dates.test.ts b/client/src/utils/dates.test.ts
new file mode 100644
index 000000000000..9a1c690929f3
--- /dev/null
+++ b/client/src/utils/dates.test.ts
@@ -0,0 +1,51 @@
+import MockDate from "timezone-mock";
+
+import { formatGalaxyPrettyDateString, galaxyTimeToDate, localizeUTCPretty } from "./dates";
+
+describe("dates.ts", () => {
+    beforeEach(() => {
+        MockDate.register("Etc/GMT+4");
+    });
+
+    afterEach(() => {
+        MockDate.unregister();
+    });
+
+    describe("galaxyTimeToDate", () => {
+        it("should convert valid galaxyTime string to Date object", () => {
+            const galaxyTime = "2023-10-01T12:00:00";
+            const date = galaxyTimeToDate(galaxyTime);
+            expect(date).toBeInstanceOf(Date);
+            expect(date.toISOString()).toBe("2023-10-01T12:00:00.000Z");
+        });
+
+        it("should append Z if missing and parse correctly", () => {
+            const galaxyTime = "2023-10-01T12:00:00";
+            const date = galaxyTimeToDate(galaxyTime);
+            expect(date.toISOString()).toBe("2023-10-01T12:00:00.000Z");
+        });
+
+        it("should throw an error for invalid galaxyTime string", () => {
+            const invalidGalaxyTime = "invalid-date-string";
+            expect(() => galaxyTimeToDate(invalidGalaxyTime)).toThrow(
+                `Invalid galaxyTime string: ${invalidGalaxyTime}`
+            );
+        });
+    });
+
+    describe("localizeUTCPretty", () => {
+        it("should format Date object into human-readable string", () => {
+            const date = new Date("2023-10-01T12:00:00Z");
+            const formatted = localizeUTCPretty(date);
+            expect(formatted).toBe("Sunday Oct 1st 8:00:00 2023 GMT-4");
+        });
+    });
+
+    describe("formatGalaxyPrettyDateString", () => {
+        it("should convert galaxyTime string to formatted date string", () => {
+            const galaxyTime = "2023-10-01T12:00:00";
+            const formatted = formatGalaxyPrettyDateString(galaxyTime);
+            expect(formatted).toBe("Sunday Oct 1st 8:00:00 2023 GMT-4");
+        });
+    });
+});
diff --git a/client/src/utils/dates.ts b/client/src/utils/dates.ts
new file mode 100644
index 000000000000..7903a56561b5
--- /dev/null
+++ b/client/src/utils/dates.ts
@@ -0,0 +1,39 @@
+import { format, parseISO } from "date-fns";
+
+/**
+ * Converts a Galaxy time string to a Date object.
+ * @param {string} galaxyTime - The Galaxy time string in ISO format.
+ * @returns {Date} The parsed Date object.
+ */
+export function galaxyTimeToDate(galaxyTime: string): Date {
+    // Galaxy doesn't include Zulu time zone designator, but it's always UTC
+    // so we need to add it to parse the string correctly in JavaScript.
+    let time = galaxyTime;
+    if (!time.endsWith("Z")) {
+        time += "Z";
+    }
+    const date = parseISO(time);
+    if (isNaN(date.getTime())) {
+        throw new Error(`Invalid galaxyTime string: ${galaxyTime}`);
+    }
+    return date;
+}
+
+/**
+ * Formats a UTC Date object into a human-readable string, localized to the user's time zone.
+ * @param {Date} utcDate - The UTC Date object.
+ * @returns {string} The formatted date string.
+ */
+export function localizeUTCPretty(utcDate: Date): string {
+    return format(utcDate, "eeee MMM do H:mm:ss yyyy zz");
+}
+
+/**
+ * Converts a Galaxy time string to a human-readable formatted date string, localized to the user's time zone.
+ * @param {string} galaxyTime - The Galaxy time string in ISO format.
+ * @returns {string} The formatted date string.
+ */
+export function formatGalaxyPrettyDateString(galaxyTime: string): string {
+    const date = galaxyTimeToDate(galaxyTime);
+    return localizeUTCPretty(date);
+}
diff --git a/client/yarn.lock b/client/yarn.lock
index cd6c4bf5f55a..25b9a38cd7be 100644
--- a/client/yarn.lock
+++ b/client/yarn.lock
@@ -11381,6 +11381,11 @@ timers-browserify@^2.0.12:
   dependencies:
     setimmediate "^1.0.4"
 
+timezone-mock@^1.3.6:
+  version "1.3.6"
+  resolved "https://registry.yarnpkg.com/timezone-mock/-/timezone-mock-1.3.6.tgz#44e4c5aeb57e6c07ae630a05c528fc4d9aab86f4"
+  integrity sha512-YcloWmZfLD9Li5m2VcobkCDNVaLMx8ohAb/97l/wYS3m+0TIEK5PFNMZZfRcusc6sFjIfxu8qcJT0CNnOdpqmg==
+
 tmpl@1.0.5:
   version "1.0.5"
   resolved "https://registry.npmjs.org/tmpl/-/tmpl-1.0.5.tgz"
diff --git a/lib/galaxy/managers/markdown_util.py b/lib/galaxy/managers/markdown_util.py
index 02545399e997..969ef76cb1ef 100644
--- a/lib/galaxy/managers/markdown_util.py
+++ b/lib/galaxy/managers/markdown_util.py
@@ -460,9 +460,7 @@ def handle_instance_organization_link(self, line, title, url):
         pass
 
     def handle_invocation_time(self, line, invocation):
-        self.ensure_rendering_data_for("invocations", invocation)["create_time"] = invocation.create_time.strftime(
-            "%Y-%m-%d, %H:%M:%S"
-        )
+        self.ensure_rendering_data_for("invocations", invocation)["create_time"] = invocation.create_time.isoformat()
 
     def handle_dataset_type(self, line, hda):
         self.extend_history_dataset_rendering_data(hda, "ext", hda.ext, "*Unknown dataset type*")
@@ -506,6 +504,9 @@ class ToBasicMarkdownDirectiveHandler(GalaxyInternalMarkdownDirectiveHandler):
     def __init__(self, trans):
         self.trans = trans
 
+    def _format_printable_time(self, time):
+        return time.strftime("%Y-%m-%d, %H:%M:%S UTC")
+
     def handle_dataset_display(self, line, hda):
         name = hda.name or ""
         markdown = "---\n"
@@ -689,7 +690,7 @@ def handle_generate_galaxy_version(self, line, generate_version):
         return (content, True)
 
     def handle_generate_time(self, line, generate_time):
-        content = literal_via_fence(generate_time.isoformat())
+        content = literal_via_fence(self._format_printable_time(generate_time))
         return (content, True)
 
     def handle_instance_access_link(self, line, url):
@@ -722,7 +723,7 @@ def _handle_link(self, url, title=None):
         return (f"[{title}]({url})", True)
 
     def handle_invocation_time(self, line, invocation):
-        content = literal_via_fence(invocation.create_time.strftime("%Y-%m-%d, %H:%M:%S"))
+        content = literal_via_fence(self._format_printable_time(invocation.create_time))
         return (content, True)
 
     def handle_dataset_name(self, line, hda):
diff --git a/test/unit/app/managers/test_markdown_export.py b/test/unit/app/managers/test_markdown_export.py
index 3470061b359f..9b276e1b07a6 100644
--- a/test/unit/app/managers/test_markdown_export.py
+++ b/test/unit/app/managers/test_markdown_export.py
@@ -280,7 +280,7 @@ def test_generate_invocation_time(self):
         invocation = self._new_invocation()
         self.app.workflow_manager.get_invocation.side_effect = [invocation]
         result = self._to_basic(example)
-        expectedtime = invocation.create_time.strftime("%Y-%m-%d, %H:%M:%S")
+        expectedtime = invocation.create_time.strftime("%Y-%m-%d, %H:%M:%S UTC")
         assert f"\n    {expectedtime}" in result
 
     def test_job_parameters(self):
@@ -413,9 +413,7 @@ def test_get_invocation_time(self):
         result, extra_data = self._ready_export(example)
         assert "invocations" in extra_data
         assert "create_time" in extra_data["invocations"]["be8be0fd2ce547f6"]
-        assert extra_data["invocations"]["be8be0fd2ce547f6"]["create_time"] == invocation.create_time.strftime(
-            "%Y-%m-%d, %H:%M:%S"
-        )
+        assert extra_data["invocations"]["be8be0fd2ce547f6"]["create_time"] == invocation.create_time.isoformat()
 
     def _ready_export(self, example):
         return ready_galaxy_markdown_for_export(self.trans, example)